Electrocoagulation with AC Electrical Current at Low Voltage for Separation of Crude Glycerol from Biodiesel Product MixtureWarakorn Sakkamas, Ajalaya Boripun, Rossarin Ampairojanawong, Sayan Ruankon, Thanapong Suwanasri and Tawiwan KangsadanE3S Web Conf., 141 (2020) 01011DOI: https://doi.org/10.1051/e3sconf/202014101011